Why people hated permanent daylight saving time in 1974

Daylight saving time, explained

Daylight saving time is supposed to help—but does it? Dive into the history, science, and consequences of this biannual aspect of American life (unless you're from Arizona or Hawaii).

Daylight Saving Time is linked to a rise in heart attacks and strokes

Losing an hour of sleep with seasonal time changes is not good for our health and it’s linked to risks for the first couple days of Daylight Saving Time, including a short-term rise in heart attacks and strokes. Scientists theorize these elevated risks are linked to the disruption to the body’s circadian rhythm.

Ending daylight saving time may prevent as many as 300,000 strokes annually

Changing clocks twice a year disrupts circadian rhythms, which last an average of 24 hours and 12 minutes. Studies have shown that permanent daylight saving time provides fewer health benefits than standard time.

The Benjamin Franklin letter that anticipated daylight saving time

Benjamin Franklin did not invent daylight saving time. But while living in Paris, he did pen a satirical letter to Parisians suggesting they could save money on lamp oil by changing their sleep schedules. Read it in full here.

The side effects of falling back and springing forward

Daylight saving time can interfere with a person’s sleep schedule, but it also has been linked to increased rates of depression, heart attack, stroke, cancer, and car accidents. UT Southwestern’s Dr. Joseph Takahashi explains why the time change is bad for your brain and health.

Staying on standard time permanently would slightly reduce obesity and stroke risk

A 2025 study that examined time changes found that permanently changing to standard time would slightly reduce obesity and stroke risk more than switching to permanent daylight saving time.

1970s U.S. energy crisis sparked waves of green innovation

Faced with the 1973 Arab oil embargo, the U.S. responded with bold innovation—enacting a 55 mph speed limit, pioneering daylight saving time, boosting solar research, expanding nuclear power, and pushing energy-efficient building designs and automotive technologies

Railroads and long-distance communication led to the development of time zones, with Greenwich established as the prime meridian—the longitude of 0 degrees—due to British advancements in star mapping and navigation.

Oil shocks, war, and the 1970s crisis that remade American energy and economics

The oil crises of the 1970s—fueled by Middle East conflict and OPEC's dominance—triggered inflation, price controls, and policy failure. But they also accelerated fracking, alternative energy, and the rise of free-market economics.

Nixon's 1971 decision to untether the dollar from gold ended the Bretton Woods exchange rate system

The Bretton Woods system initially pegged all major currencies to the US dollar, which could be exchanged for gold at a fixed rate of $35 per ounce. Growing deficits and decreasing gold reserves prompted Nixon to end that guarantee in 1971, marking the end of the fixed exchange rate era.

In the 1970s, the US experienced a period of stagflation

It was characterized by high inflation, slow economic growth, and high unemployment. The crisis was triggered by a combination of factors, including loose monetary policy that spurred excess demand and spiraling oil prices caused by an OPEC embargo in 1973.

Celebrations for America's 150th birthday in 1926 were a poorly organized mess that nearly bankrupted the host city of Philadelphia.

FDR changed the date of Thanksgiving, then changed it back

In the waning years of the Great Depression, President Franklin Delano Roosevelt attempted to move Thanksgiving up by a week, giving merchants a longer holiday shopping season. After pushback from lawmakers, he reversed course in 1941, permanently fixing the date of Thanksgiving on the fourth Thursday of November.

Views on the Nixon pardon softened over time

Americans initially rejected Ford's September 1974 pardon of Nixon—38% approved it versus 53% disapproved—but by 1986, a slim majority (54%) believed it was the right call, showing that public sentiment softened over more than a decade after the controversy.

The massive gathering that rang in the first Earth Day

Earth Day was first celebrated in 1970 and helped inspire a significant nationwide environmental movement. In Philadelphia, the holiday was rung in with a gathering in the city’s Fairmount Park featuring musicians, speakers, and over 10,000 attendees. This video from CBS offers remarkable footage from the day and explains why Philadelphians were especially drawn to the environmental cause.

In the early 1900s, Fourth of July celebrations were so dangerous that a reform movement emerged to make them safer.

Some US states are now revising their happy hour bans

While states like Massachusetts started banning happy hour in the 1980s as an anti-overconsumption measure, not every state has kept these bans intact. This article dives into the arguments for and against revising the happy hour ban in Massachusetts, the first state to institute such a ban.

Within an 18-hour period in 1974, 13 states were hit by 148 tornadoes

From April 3-4, a tornado outbreak killed over 300 people and caused $600M in damage ($3.8B in 2024 dollars). The event revealed deficiencies in various technologies, including crude radar imaging and slow typewriter-based communication systems, which quickly bottlenecked and became outdated as tornado watches became tornado warnings.

Environmental regulation had bipartisan support in the 1970s

During the 1970s, Democrats and Republicans alike backed landmark environmental laws. Congress passed the Clean Air, Clean Water, and Endangered Species Acts with overwhelming bipartisan majorities—reflecting broad public agreement on protecting the environment.

OPEC's 1973 embargo sparked the first global energy shock.

Early Americans hated the idea of a central bank

After a series of economic panics induced by a lack of reserve cash at regional banks, the architects of today’s Federal Reserve opted to emphasize the goal of the bank as a reserve at the federal level—thus creating the lasting name.

SAD disrupts melatonin secretion, producing it longer in the morning

The hormone is secreted from the pineal gland in the brain and is key to the timing of sleep. However, the substance does not generate sleep itself. With seasonal affective disorder, the body misperceives the photoperiod—the time with light—and the cycle of sleeping and waking gets off-phase, leading to issues with circadian rhythms.

The War Powers Act of 1973 was passed over Nixon's veto to limit the president's ability to wage war unilaterally

Passed in the aftermath of the Vietnam War, the War Powers Resolution requires the president to notify Congress within 48 hours of deploying forces and to end military operations within 60 days without congressional approval. Nixon vetoed the bill, arguing it was unconstitutional, but Congress overrode his veto.

The US government has shut down 22 times since 1976

This resource breaks down every federal shutdown since 1976, showing how long each lasted and the budget disputes that caused them—revealing how routine funding failures have become in modern US politics.

July Fourth wasn't always a holiday, and its meaning has changed over time.

Read Norman Rosenthal’s original 1984 paper describing SAD

The study helped formalize research and diagnosis of seasonal affective disorder, catalyzing the development of therapies (like bright light) and leading to broader adoption of effective treatments. It also helped connect the influence of light and seasons on biological mechanisms in the human body, spurring exploration of circadian rhythms.

Massachusetts banned happy hour in 1984 during a surge in advocacy around preventing drunk driving

Massachusetts was the first US state to ban happy hours. The ban, which prohibits selling discounted drinks during designated times, occurred after a 20-year-old woman died in a drunken driving accident in Braintree, Massachusetts.

More extreme heat days are putting human health at risk in both the short and long term

America is generally experiencing more frequent extreme heat days, over a longer period, in certain parts of the country. The heat-related death toll is rising, and beyond those direct deaths, extreme heat can also have troubling ripple effects including elevated violence and decreased productivity.

See what it was like to live in the United States during World War II

In America, life was transformed by total war: sixteen million service members left civilian life, while massive industrial production demanded labor. Women, minorities, and teens filled factories, fueling boomtown growth and breaking social barriers. Simultaneously, rationing, recycling drives, Victory Gardens, ration stamps, blackout drills, and war bond campaigns permeated daily routines.

The Smoot-Hawley Tariff Act—which was passed during the Great Depression with the goal of reviving domestic industry—is among the most famous pieces of economic legislation in US history.

The quiz show scandals eroded trust in the media

Many viewers were attracted to the shows because they were filled with real people winning real money. After it was exposed that “Dotto,” “Twenty-One,” “The $64,000 Question,” and others had been fixed, the genre struggled to regain viewers’ trust. The government intervened, too: President Eisenhower called the shows’ deception “a terrible thing to do to the American people” and Congress amended the Communications Act in 1960, explicitly outlawing fraudulent game shows.

In July 1979, tens of thousands of people rioted on the Chicago White Sox field during 'Disco Demolition Night,' a promotional event that advertised the public burning of the genre's hit records.

Despite originating in America, happy hour isn't allowed in every state.

One theory claims the retinae of SAD patients may fail to adjust to less light in winter

Most people’s eyes become more sensitive to light in the winter months, but some do not. This failure to adjust causes ripple effects on those individuals’ biological clocks. This Ted-ED video provides a clear, brief, narrative explanation of the condition in six minutes.

The history of the New Year's misunderstanding in England

In the mid-18th century, the legal system in England operated under the understanding that the New Year began March 25. However, the widespread custom remained a Jan. 1 celebration as the public had been practicing for years. Read along to discover the practical issues this discrepancy caused and how the English legal system ended up yielding to public belief.

Los Angeles once suffered some of the worst smog on Earth

From the 1940s through the 1960s, Los Angeles was blanketed by dense, eye-burning smog so severe that drivers sometimes couldn't see traffic lights. The issue led to the nation's first local air pollution controls and inspired the passage of the 1970 Clean Air Act.

Earth Day began as a grassroots protest coordinated by a 25-year-old

With experience as a Vietnam activist and inspired by his upbringing in a polluted mill town, Denis Hayes drew 20 million participants to the first Earth Day after being selected to organize it. The momentum of the event—celebrated across about 10,000 schools and universities—pressured Congress to pass environmental legislation.

The 1973 oil embargo by OPEC inspired advances in alternative energy technology

The shortages imposed by the Organization of Petroleum Exporting Countries (OPEC) created a global energy crisis and economic instability after the Arab-Israeli War. This led to investments in green technologies and improvements in automobile fuel efficiency and manufacturing.

Springsteen says 'Born in the USA' is his 'most misunderstood' song

In 1984, Ronald Reagan was running for reelection and referenced Springsteen at a New Jersey event, saying, "America's future rests in the message of hope in the songs of a man so many young Americans admire — New Jersey's own, Bruce Springsteen." Days later, Springsteen would make his opposition to Reagan clear at a Pittsburgh show. Years later, he'd call the song "one of my greatest and most misunderstood pieces of music."

The environmental crises of the late 1960s led to the founding of the EPA

Disasters such as the Cuyahoga River fire and the Santa Barbara oil spill prompted Congress and President Nixon to establish the Environmental Protection Agency in December 1970, with the goal of unifying federal efforts to control pollution.

Enough sunlight hits Earth in just 90 minutes to power the planet for an entire year

Despite this, in 2023, only 5.1% of electricity in the US came from solar energy. Solar panel technology has nonetheless made significant advancements since the 19th century, largely due to NASA's efforts in the space race.

A 1960s effort came close to abolishing the Electoral College

This podcast episode examines the closest attempts in US history to eliminate the Electoral College, focusing on a major 1960s reform push—and why, despite broad support, it ultimately failed.

The US dollar became the world's reserve currency, backed by gold, after 44 nations gathered in Bretton Woods, New Hampshire, in 1944 with the intention of rebuilding the global economy.

How Spielberg changed film

Before "Jaws," summer was Hollywood’s off-season. Steven Spielberg’s 1975 thriller changed all that, launching the era of the summer blockbuster. From "E.T." to "Jurassic Park," Spielberg’s films redefined how stories were told, how audiences reacted, and how studios marketed.

Dangers of a record-breaking, sleep-skipping stunt

In 1963, 17-year-old Randy Gardner decided to stay awake for as long as it took to break the current world record. He managed to stay awake for 11 days. In 2017, the then-71-year-old Gardner told NPR that his experience had come back to haunt him as insomnia. The challenge has since been removed from the Guinness Book of World Records due to its dangerous consequences.

Opposition to British taxes, regulation of trade was key to American independence

The economic situation in the colonies formed the backbone of the central events of the Revolution. British war debts caused it to lay the first direct taxes on colonists, cease their westward expansion claims, and adhere to stringent trade regulations, leading to backlash and eventual separation.

Thomas Edison publicly executed animals with AC to convince the public of its dangers

J.P. Morgan first backed Thomas Edison's direct current system, seeing electricity's potential to usurp John D. Rockefeller's kerosene empire. Despite the investments and smear campaign against alternating current, alternating current ultimately won public support after lighting the 1893 World's Fair, after which Morgan would fund Tesla's wireless transmission tower.

The world's quirkiest time zones

In contrast to telling time by physical signs like the sun or stars, cultural time relies on political agreement and standards. The convention of time zones arose due to transportation and communication advancements, and while many work just fine, some are pretty wild. Chief among those is the time zone of the uninhabited Baker and Howland Islands in the central Pacific, which results in a technical 26-hour day.

Dylan's 1965 electric set at the Newport Folk Festival was viewed by some as a betrayal

It's considered a watershed moment in his career and rock ‘n’ roll history, mostly because the audience allegedly booed Dylan’s new electrified songs, believing he had abandoned politically minded folk music for pop stardom.

Watch a news clip from the evening of 'the Saturday Night Massacre'

On Oct. 20, 1973, President Nixon ordered the firing of Special Prosecutor Archibald Cox—prompting the resignations of Attorney General Elliot Richardson and Deputy AG William Ruckelshaus. This NBC News Special Report shows the immediate aftermath of the decision.